Define (a) altiplano, (b) paramo, (c) timber line, (d) selva.

How have Brazilians used technology to produce electricity from natural resources?

Compare and contrast India's oil production and consumption in 2000and in 2010.

Match each expression from Column I with the equivalent choice from Column II. $(-27)^{1 / 3}$. A. -4, B. 8, C. $\sqrt{2}$, D. $-\sqrt{6}$, E. -3, F. $\sqrt{6}$, G. 4, H. -2, I. 6, J. Not a real number.

The relationship between the Celsius $\left(^{\circ} \mathrm{C}\right)$ and Fahrenheit $\left(^{\circ} \mathrm{F}\right)$ scales for measuring temperature is given by the equation $F=\frac{9}{5} C+32.$ The relationship between the Celsius $\left(^{\circ} \mathrm{C}\right)$ and Kelvin (K) scales is K = C + 273. Graph the equation $F=\frac{9}{5} C+32$ using degrees Fahrenheit on the y-axis and degrees Celsius on the x-axis. Obtain the graph showing the relationship between Kelvin and Fahrenheit temperatures.

What details in the story tell you that Sigurd is a hero who is favored by the gods? Based on your answer, explain the qualities that the Norse seem to value in their heroes.

What is a monsoon? Discuss the positive and negative effects of monsoons in India.

A student is studying the properties of two metals. Metal A burns brightly when touched to a flame, leaving behind a white powder. Metal B does not burn, but when it is left exposed for several weeks, a dark, scaly coating forms on its surface. Describe the chemical composition of the white powder and the dark, scaly coating.

For the given functions f and g, (a) Graph f and g on the same Cartesian plane. (b) Solve $f(x)=g(x).$ (c) Use the result of part (b) to label the points of intersection of the graphs of f and g. (d) Shade the region for which $f(x)>g(x),$ that is, the region below f and above g. $f(x)=-x^{2}+5 x; g(x)=x^{2}+3 x-4$

A symmetrical toroidal coil is wound on a plastic core $\mu _{r} \cong 1$ and is found to have an inductance of 1 mH. What inductance will result if the core material is changed to a ferrite having $\mu_{r}= 200?$ Assume that the entire magnetic path is composed of ferrite.

Suppose a 5.00-m-diameter telescope were constructed on the Moon, where the absence of atmospheric distortion would permit excellent viewing. If observations were made using 500-nm light, what minimum separation between two objects could just be resolved on Mars at closest approach (when Mars is $8.0 \times 10 ^ { 7 }$ km from the Moon)?

The similarity between the king and shoppers is: A) both are wealthy; B) both are trying to save their children; C) both are trying to find happiness; D) both are insensitive to other people.

The presence of the radioactive gas radon (Rn) in well water presents a possible health hazard in parts of the United States. Assuming that the solubility of radon in water with 1 atm pressure of the gas over the water at

$$30 ^ { \circ } \mathrm { C }$$

is

$$7.27 \times 10 ^ { - 3 } M$$

what is the Henry's law constant for radon in water at th is temperature?

Suppose that $n\gt 1$ people are positioned in a field (Euclidean plane) so that each has a unique nearest neighbor. Suppose further that each person has a pie that is hurled at the nearest neighbor. A survivor is a person that is not hit by a pie. Give an example to show that if $n$ is even, there might be no survivor.